pwr_october-2024 - 19
FOCUS ON O&M
detection tests. The PULSAR test uses a
pulsed excitation method instead of continuous
sinusoidal excitation. It can detect
both interlaminar faults and circulating
currents in the stator core, and provides
higher sensitivity and better fault localization
compared to traditional methods.
Notably, it can be performed more quickly
and with less power consumption than
conventional high-flux tests.
The PULSAR test works by applying shortduration,
high-amplitude current pulses to an
auxiliary winding wrapped around the stator
core. It then measures the induced voltage
in a search coil to detect any anomalies in the
core's magnetic properties.
Still more tests that GE Vernova per3.
Removing the rotor from a generator is time-consuming and presents opportunities for
potential damage. Robotic inspections can eliminate some of the risks. Source: Shutterstock
is conducted at a higher magnetic flux
density, usually close to the rated flux of
the machine. Its objectives include verifying
the core's ability to withstand full
magnetic stress without excessive heating,
detecting any major core defects
that might not be apparent at lower flux
levels, and assessing the overall magnetic
performance of the stator core. The
high magnetic test often involves energizing
the core to about 80% to 100% of
rated flux, and monitoring temperature
rise and power losses.
PULSAR Test. PULSAR test is a catchy
name derived from pulsed stepped auxiliary
winding ring test. It's a specialized
test developed to improve upon traditional
electromagnetic core imperfection
forms on generators during maintenance
periods include the stator cooling water
flow test, stator end-winding vibration test
(bump test), rotor field electrical test, rotor
hydrogen seal pressure test, stator radial
wedging test, and brushless exciter diode
test. These tests, when used in combination,
provide a comprehensive assessment
of a generator's condition and help
ensure reliable long-term operation. ■
-Aaron Larson is POWER's
executive editor.
PERFORMANCE, ENGINEERED.
Performance engineered pump solutions and
through-life service designed to ensure seamless
power plant operations.
MES API 610 BB4 TYPE PUMP
for boiler feed water service
CPP API 610 VS1 TYPE PUMP
for condensate extraction
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CEX API 610 VS6 TYPE PUMP
for circulating cooling
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trilliumflow.com/powermag
October 2024 | POWER
www.powermag.com
19
https://www.trilliumflow.com/powermag
http://www.powermag.com
pwr_october-2024
Table of Contents for the Digital Edition of pwr_october-2024
pwr_october-2024 - Cover1
pwr_october-2024 - Cover2
pwr_october-2024 - 1
pwr_october-2024 - 2
pwr_october-2024 - 3
pwr_october-2024 - 4
pwr_october-2024 - 5
pwr_october-2024 - 6
pwr_october-2024 - 7
pwr_october-2024 - 8
pwr_october-2024 - 9
pwr_october-2024 - 10
pwr_october-2024 - 11
pwr_october-2024 - 12
pwr_october-2024 - 13
pwr_october-2024 - 14
pwr_october-2024 - 15
pwr_october-2024 - 16
pwr_october-2024 - 17
pwr_october-2024 - 18
pwr_october-2024 - 19
pwr_october-2024 - 20
pwr_october-2024 - 21
pwr_october-2024 - 22
pwr_october-2024 - 23
pwr_october-2024 - 24
pwr_october-2024 - 25
pwr_october-2024 - 26
pwr_october-2024 - 27
pwr_october-2024 - 28
pwr_october-2024 - 29
pwr_october-2024 - 30
pwr_october-2024 - 31
pwr_october-2024 - 32
pwr_october-2024 - 33
pwr_october-2024 - 34
pwr_october-2024 - 35
pwr_october-2024 - 36
pwr_october-2024 - 37
pwr_october-2024 - 38
pwr_october-2024 - 39
pwr_october-2024 - 40
pwr_october-2024 - Cover3
pwr_october-2024 - Cover4
https://www.nxtbook.com/accessintelligence/POWER/pwr_november-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_december-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_october-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr-re-tech_september-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_september-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_august-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_june-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_july-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_may-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_april-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_march-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_february-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_january-2024
https://www.nxtbook.com/accessintelligence/POWER/pwr_december-2023
https://www.nxtbook.com/accessintelligence/POWER/pwr_november-2023
https://www.nxtbook.com/accessintelligence/POWER/power-october-2023
https://www.nxtbook.com/accessintelligence/POWER/re-tech-supp-to-power-september-2023
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https://www.nxtbook.com/accessintelligence/POWER/power-and-re-tech-supp-september-2023
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https://www.nxtbook.com/accessintelligence/POWER/power-january-2023
https://www.nxtbook.com/accessintelligence/POWER/power-december-2022
https://www.nxtbook.com/accessintelligence/POWER/power-november-2022
https://www.nxtbook.com/accessintelligence/POWER/Power-October-2022-140th-Anniversary-Supp
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https://www.nxtbook.com/accessintelligence/POWER/power-and-re-tech-supp-september-2022
https://www.nxtbook.com/accessintelligence/POWER/power-september-2022
https://www.nxtbook.com/accessintelligence/POWER/power-august-2022
https://www.nxtbook.com/accessintelligence/POWER/Power-July-2022-Intl
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https://www.nxtbook.com/accessintelligence/POWER/power-june-2022-intl
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https://www.nxtbook.com/accessintelligence/POWER/power-december-2021
https://www.nxtbook.com/accessintelligence/POWER/power-top-plants-supp-december-2021
https://www.nxtbook.com/accessintelligence/POWER/power-november-2021
https://www.nxtbook.com/accessintelligence/POWER/power-october-2021
https://www.nxtbook.com/accessintelligence/POWER/power-september-2021
https://www.nxtbook.com/accessintelligence/POWER/power-august-2021
https://www.nxtbook.com/accessintelligence/POWER/power-july-2021
https://www.nxtbook.com/accessintelligence/POWER/power-june-2021
https://www.nxtbook.com/accessintelligence/POWER/power-may-2021
https://www.nxtbook.com/accessintelligence/POWER/power-april-2021
https://www.nxtbook.com/accessintelligence/POWER/power-march-2021
https://www.nxtbook.com/accessintelligence/POWER/power-february-2021
https://www.nxtbook.com/accessintelligence/POWER/power-january-2021
https://www.nxtbook.com/accessintelligence/POWER/power-december-2020
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https://www.nxtbook.com/accessintelligence/POWER/power-december-2019
https://www.nxtbook.com/accessintelligence/POWER/power-november-2019
https://www.nxtbook.com/accessintelligence/POWER/power-october-2019
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https://www.nxtbook.com/accessintelligence/POWER/power-november-2013
https://www.nxtbook.com/accessintelligence/POWER/power-october-2013
https://www.nxtbook.com/accessintelligence/POWER/power-september-2013
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